1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.servlet;
24  
25  import com.liferay.portal.NoSuchLayoutException;
26  import com.liferay.portal.kernel.log.Log;
27  import com.liferay.portal.kernel.log.LogFactoryUtil;
28  import com.liferay.portal.kernel.util.ContentTypes;
29  import com.liferay.portal.kernel.util.GetterUtil;
30  import com.liferay.portal.kernel.util.Validator;
31  import com.liferay.portal.model.Portlet;
32  import com.liferay.portal.service.PortletLocalServiceUtil;
33  import com.liferay.portal.util.Portal;
34  import com.liferay.portal.util.PortalUtil;
35  import com.liferay.portal.util.PropsValues;
36  import com.liferay.portal.util.WebKeys;
37  import com.liferay.util.servlet.ServletResponseUtil;
38  
39  import java.io.IOException;
40  
41  import javax.servlet.ServletException;
42  import javax.servlet.http.HttpServlet;
43  import javax.servlet.http.HttpServletRequest;
44  import javax.servlet.http.HttpServletResponse;
45  
46  /**
47   * <a href="GoogleGadgetServlet.java.html"><b><i>View Source</i></b></a>
48   *
49   * @author Alberto Montero
50   */
51  public class GoogleGadgetServlet extends HttpServlet {
52  
53      public void service(
54              HttpServletRequest request, HttpServletResponse response)
55          throws IOException, ServletException {
56  
57          try {
58              String content = getContent(request);
59  
60              if (content == null) {
61                  PortalUtil.sendError(
62                      HttpServletResponse.SC_NOT_FOUND,
63                      new NoSuchLayoutException(), request, response);
64              }
65              else {
66                  request.setAttribute(WebKeys.GOOGLE_GADGET, Boolean.TRUE);
67  
68                  response.setContentType(ContentTypes.TEXT_XML);
69  
70                  ServletResponseUtil.write(response, content);
71              }
72          }
73          catch (Exception e) {
74              _log.error(e, e);
75  
76              PortalUtil.sendError(
77                  HttpServletResponse.SC_INTERNAL_SERVER_ERROR, e, request,
78                  response);
79          }
80      }
81  
82      protected String getContent(HttpServletRequest request) throws Exception {
83          String path = GetterUtil.getString(request.getPathInfo());
84  
85          if (Validator.isNull(path)) {
86              return null;
87          }
88  
89          int pos = path.indexOf(Portal.FRIENDLY_URL_SEPARATOR);
90  
91          if (pos == -1) {
92              return null;
93          }
94  
95          long companyId = PortalUtil.getCompanyId(request);
96  
97          String portletId = path.substring(
98              pos + Portal.FRIENDLY_URL_SEPARATOR.length());
99  
100         Portlet portlet = PortletLocalServiceUtil.getPortletById(
101             companyId, portletId);
102 
103         String title = portlet.getDisplayName();
104 
105         String widgetJsURL =
106             PortalUtil.getPortalURL(request) + PortalUtil.getPathContext() +
107                 "/html/js/liferay/widget.js";
108 
109         String widgetURL = request.getRequestURL().toString();
110 
111         widgetURL = widgetURL.replaceFirst(
112             PropsValues.GOOGLE_GADGET_SERVLET_MAPPING,
113             PropsValues.WIDGET_SERVLET_MAPPING);
114 
115         StringBuilder sb = new StringBuilder();
116 
117         sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
118         sb.append("<Module>");
119         sb.append("<ModulePrefs title=\"" + title + "\"/>");
120         sb.append("<Content type=\"html\">");
121         sb.append("<![CDATA[");
122         sb.append("<script src=\"" + widgetJsURL + "\" ");
123         sb.append("type=\"text/javascript\"></script>");
124         sb.append("<script type=\"text/javascript\">");
125         sb.append("window.Liferay.Widget({url:'" + widgetURL + "'});");
126         sb.append("</script>");
127         sb.append("]]>");
128         sb.append("</Content>");
129         sb.append("</Module>");
130 
131         return sb.toString();
132     }
133 
134     private static Log _log = LogFactoryUtil.getLog(GoogleGadgetServlet.class);
135 
136 }